CN1278192C - Image forming apparatus having transprinting belt - Google Patents
Image forming apparatus having transprinting belt Download PDFInfo
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- CN1278192C CN1278192C CN03149596.6A CN03149596A CN1278192C CN 1278192 C CN1278192 C CN 1278192C CN 03149596 A CN03149596 A CN 03149596A CN 1278192 C CN1278192 C CN 1278192C
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- transfer belt
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- image forming
- forming apparatus
- photosensitive drums
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Images
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1604—Arrangement or disposition of the entire apparatus
- G03G21/1609—Arrangement or disposition of the entire apparatus for space saving, e.g. structural arrangements
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
- G03G2215/0103—Plural electrographic recording members
- G03G2215/0119—Linear arrangement adjacent plural transfer points
- G03G2215/0122—Linear arrangement adjacent plural transfer points primary transfer to an intermediate transfer belt
- G03G2215/0125—Linear arrangement adjacent plural transfer points primary transfer to an intermediate transfer belt the linear arrangement being horizontal or slanted
- G03G2215/0132—Linear arrangement adjacent plural transfer points primary transfer to an intermediate transfer belt the linear arrangement being horizontal or slanted vertical medium transport path at the secondary transfer
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
- G03G2215/0103—Plural electrographic recording members
- G03G2215/0119—Linear arrangement adjacent plural transfer points
- G03G2215/0138—Linear arrangement adjacent plural transfer points primary transfer to a recording medium carried by a transport belt
- G03G2215/0148—Linear arrangement adjacent plural transfer points primary transfer to a recording medium carried by a transport belt the linear arrangement being slanted
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/16—Transferring device, details
- G03G2215/1604—Main transfer electrode
- G03G2215/1623—Transfer belt
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1678—Frame structures
- G03G2221/1687—Frame structures using opening shell type machines, e.g. pivoting assemblies
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Electrophotography Configuration And Component (AREA)
- Color Electrophotography (AREA)
Abstract
一种图像形成装置，该装置沿着转印带(16)按各色设有在感光鼓(20)周围配置了充电装置(22)和显影装置(24)的图像形成站Y、M、C、K，其中，倾斜配置所述转印带(16)，同时在所述转印带的垂直下方或垂直上方配置内置电源·控制电路的电路封装盒(5)。并且，在转印带的垂直下方或垂直上方配置阵列式写入头(23)的驱动电路。从而提供一种超小型，且维护性能卓越的图像形成装置。
An image forming apparatus which is provided with image forming stations Y, M, C, Y, M, C, K, wherein the transfer belt (16) is arranged obliquely, and a circuit packaging box (5) with a built-in power supply and control circuit is arranged vertically below or vertically above the transfer belt. And, the drive circuit of the array write head (23) is arranged vertically below or vertically above the transfer belt. Thereby, an ultra-small image forming apparatus with excellent maintainability can be provided.
Description
Technical field
The present invention relates to be arranged on the image formation station that photosensitive drums has disposed charging device and developing apparatus on every side by of all kinds, and make transfer belt pass through each station, the tandem type image processing system of formation coloured image along transfer belt.
Background technology
As described tandem type image processing system, following technology is for example disclosed in Japanese patent laid-open 11-95520 communique: promptly, with a plurality of rollers in the vergence direction tensioning, support transfer belt (paper travelling belt), and dispose a plurality of laser scanning devices, make its part for tensioning in transfer belt, support a plurality of images formation station that direction is arranged, the state that is coincidence, thereby make device integral body be tending towards miniaturization, and, with tensioning, the oblique side space down of the transfer belt that supports is used for the paper upset path of duplex transfer printing, or the space of carrying paper feeding cassette, or the space of when recording medium takes place to stop up, handling.
In addition, open the Jap.P. spy and to disclose following technology among the 2001-249522: promptly, with the tensioning in the horizontal direction of a plurality of rollers, support transfer belt (intermediate transfer belt), tensioning, supporting surface over against the transfer belt below, arrange a plurality of images and form the station, and below each image formation station, dispose the array write head, thereby shorten the transfer path of recording medium, make the opening that when recording medium produce to be stopped up, is used to take out recording medium little, and then make the image processing system integral miniaturization.
Yet, in described existing mode, make the image processing system integral miniaturization by tilted configuration transfer belt or employing array write head, still, in the miniaturization of implement device, be used to make the image processing system action circuit be configured as important problem.
Particularly, in the tandem type image processing system as above-mentioned various existing modes, there are the following problems: promptly, in order to make a plurality of images form station action simultaneously, to the high-voltage power supply substrate of charging device, developing apparatus, transfer member etc., make the image forming course mechanical action the electrical source of power substrate and will be from the view data of principal computer etc. by color separated and to carry out the interface board of Flame Image Process all very big, above or below the side that these is configured in the image processing system main body or the back side, then its result can not miniaturization device.
In addition, in described various existing modes, the maintenance of device also has following problems.In the mode of above-mentioned Japanese patent laid-open 11-95520 communique, during the obstruction of occurrence record medium, each image need be formed the station and after the direction of principal axis taking-up of photosensitive drums, remove recording medium, therefore, remove blocked recording medium and not only spend time, and when removing, can injure the surface of photosensitive drums and transfer belt, thereby can produce image deflects.In addition, also can after transfer belt is avoided in rotation, remove recording medium, but at this moment need to rotate the space of avoiding transfer belt, therefore, miniaturization that can't implement device.And the framework for correct location, bracing or strutting arrangement each several part need be provided with opening portion, so that the direction of principal axis along photosensitive drums plugs each image formation station, or removes the recording medium of stopping up, yet, the rigidity of framework can be reduced like this, thereby picture quality can be worsened.
In addition, above-mentioned Jap.P. spy opens in the mode of 2001-249522, there are the following problems: promptly, since be used for changing each image form the opening portion at station and be used to get rid of the recording medium obstruction opening portion that direction is set is different, therefore, when safeguarding, the operator is not clear should to operate for which opening portion.In addition, because when changing each image formation station, need unload transfer belt from the image processing system main body, therefore, need guarantee has certain space at the periphery of image processing system, so that place transfer belt when the operator changes image formation station, therefore, changing not only needs time, and also can injure transfer belt when placing.
Summary of the invention
The present invention proposes in order to solve above-mentioned existing issue, and its purpose is, the image processing system of a kind of microminiature and maintainability brilliance is provided.
In order to reach described purpose, image processing system of the present invention is a kind of along transfer belt, forms the image processing system of standing by the image that has disposed charging device and developing apparatus around photosensitive drums that is provided with of all kinds,
It is characterized in that, the described transfer belt of tilted configuration, simultaneously, at the vertical lower of described transfer belt or the circuit package box of vertical direction configuration built-in power control circuit (Electricity dress product ボ Star Network ス).
In addition, it is characterized in that, around each photosensitive drums, the array write head is set, utilize this array write head on photosensitive drums, to form sub-image.
In addition, it is characterized in that, have portion within it be provided with housing that described each image forms station and transfer belt with, be installed in framework on this housing freely to rotate, on this framework, be provided with transfer belt unit and image carrier unit, or transfer belt unit and image carrier unit and developing cell.
In addition, it is characterized in that the rotating fulcrum of described framework is arranged on two sides of housing.
In addition, it is characterized in that the rotating fulcrum of described framework is arranged on the side of housing.
In addition, it is characterized in that described transfer belt is the paper travelling belt.
In addition, it is characterized in that described transfer belt is an intermediate transfer belt.
In addition, it is characterized in that, the photosensitive drums that each image forms the station is set, make described photosensitive drums contact with the direction of transfer belt surface down of intermediate transfer belt.
According to the present invention, for forming the image processing system of standing by the image of around photosensitive drums, being furnished with charging device and developing apparatus that is provided with of all kinds along transfer belt, because the described transfer belt of tilted configuration, simultaneously, at the vertical lower of described transfer belt or the circuit package box of vertical direction configuration built-in power control circuit, so, a kind of microminiature can be provided, and the image processing system of maintainability brilliance.
Brief description of drawings
Fig. 1 is an embodiment of image processing system of the present invention, is integrally-built schematic sectional view.
Fig. 2 sees front view in the past from right in Fig. 1.
Fig. 3 is the transfer belt unit of Fig. 1 and the enlarged drawing of image formation unit.
Fig. 4 is the stereographic map of transfer belt and the photosensitive drums of Fig. 2.
Fig. 5 is the key diagram of the replacing consumables among Fig. 1.
Fig. 6 is that continuous Fig. 5 illustrates the key diagram of changing consumables.
Fig. 7 is that continuous Fig. 6 illustrates the key diagram of changing consumables.
Fig. 8 is that continuous Fig. 7 illustrates the key diagram of changing consumables.
Fig. 9 is the synoptic diagram of the variation of Fig. 8.
Figure 10 is that continuous Fig. 9 illustrates the key diagram of changing consumables.
Figure 11 is other embodiment of image processing system of the present invention, is integrally-built schematic sectional view.
Figure 12 is the synoptic diagram of other embodiment of image processing system of the present invention.
Figure 13 is the synoptic diagram of other embodiment of image processing system of the present invention.
Figure 14 is the synoptic diagram of other embodiment of image processing system of the present invention.
Figure 15 is the synoptic diagram of other embodiment of image processing system of the present invention.
The working of an invention mode
Below, embodiments of the invention are described with reference to the accompanying drawings.Fig. 1 is an embodiment of image processing system of the present invention, it is the integrally-built schematic sectional view of expression, Fig. 2 sees front view in the past from right in Fig. 1, Fig. 3 is the transfer belt unit of Fig. 1 and the enlarged drawing of image formation unit, and Fig. 4 is the stereographic map of transfer belt and the photosensitive drums of Fig. 2.In addition, in the following description,, enclose same label sometimes and omit explanation for structure identical between each accompanying drawing.Present embodiment is as transfer belt, uses the example of intermediate transfer belt.
In Fig. 1, the image processing system 1 of present embodiment is installed in first of housing 2 fronts with having housing 2, freely openable and opens and closes parts 3 and freely openable ground and be installed in the second switching parts (dual-purpose row paper disc) 4 above the housing 2, and, first opens and closes the open-close lid 3 ' that parts 3 are installed in housing 2 fronts with also having freely openable, open-close lid 3 ' can open and close with 3 interlocks of the first switching parts, also can independently open and close.
In housing 2, be provided with circuit package box 5, image formation unit 6, Air Blast fan 7, transfer belt unit 9, the paper supply unit 10 of built-in power circuit substrate and control circuit substrate, open and close in the parts 3 first and then be provided with secondary transfer printing unit 11, fixation unit 12, recording medium conveyer 13.Consumables in image formation unit 6 and the paper supply unit 10 can be dismantled from main body, at this moment, can take out together and place under repair or replacing related transfer belt unit 9.
As shown in Figure 2, at the bottom of housing 2 fronts two side-prominent a pair of backguy (stay) 2a that are provided with, and be formed with a pair of rotating part 3a in first both sides, bottom that open and close parts 3, on backguy 2a and rotating part 3a, insert axle 3b, thereby be installed on the housing 2 with opening and closing parts 3 freely openables first.Be provided with guidance panel 3c on the first front surface top that opens and closes parts 3, in addition, be formed with the loading and unloading opening 3d of paper feeding cassette 35 in first bottom that opens and closes parts 3.In the present embodiment, as described later, only just enter and to load and unload each unit, so can be arranged on the device compactness indoor from the device front.
In Fig. 1, transfer belt unit 9 has: driven roller 14 is located at the below of housing 2, by the drive source rotating drive that does not have expression among the figure; Driven voller 15 is configured in the oblique upper of driven roller 12; Intermediate transfer belt 16 is supported on 14,15 on described 2 rollers, drives to illustrated direction of arrow circulation; Cleaning device 17 contacts with the surface of intermediate transfer belt 16; Wherein, on the direction that driven voller 15 and intermediate transfer belt 16 tilt in the drawings to the left with respect to driven roller 14 configuration.Like this, the band direction of transfer belt surface 16a down in the time of intermediate transfer belt 16 being driven is positioned at the below.Band tension face (by the face of driven roller 14 tensions) when in the present embodiment, described belt surface 16a is the band driving.
Supporting frame 9a supports described driven roller 14 and driven voller 15 with rotating freely, and be formed with rotating part 9b in the lower end of supporting frame 9a, this rotating part 9b is installed on rotation axis (rotating fulcrum) 2b that is arranged on the housing 2, like this, supporting frame 9a is installed into for housing 2 free to rotate.In addition, be provided with locking bar 9c freely to rotate in the upper end of supporting frame 9a, locking bar 9c can be by the lock shaft 2c locking that is located on the housing 2.
In addition, in the present embodiment, make the diameter of the diameter of driven roller 14 less than impulsion roller 15.Like this, the recording medium behind the secondary transfer printing can be peeled off easily by the elastic force of recording medium self.In addition, the backer roll of driven voller 15 double as cleaning devices 17.
In addition, the photosensitive drums 20 that forms station Y, M, C, K with each image described later over against, the primary transfer parts 21 that are made of the laminated spring electrode contact by the back side of its elastic force with the direction of transfer belt surface 16a down of intermediate transfer belt 16, and, on primary transfer parts 21, be applied with transfer bias.
On the supporting frame 9a of transfer belt unit 9, be provided with test pattern sensor (test pattern sensor) 18 with driven roller 14 adjacency.This test pattern sensor 18 is by each colour toners on the middle transfer belt 16 being positioned, simultaneously, detect the concentration of toner image of all kinds, coming the colo(u)r bias of each color image of revisal and the sensor of image color.In the retaining part of test pattern sensor 18, preferably additional with the structure that does not have illustrated bolt structure or bar structural adjustment intermediate transfer belt position and sensing station.
Now, just extensively employing will be formed on described test pattern on the intermediate transfer belt 16 and not be transferred to method on the recording medium with cleaning device 17 removals of intermediate transfer belt 16.And, at this moment, also adopt to make secondary transfer roller 19 avoid toner to be attached to secondary transfer roller 19 surfaces from the method that middle transfer belt 16 breaks away from.If only between the retained part of test pattern, carry out the disengaging action of secondary transfer roller 19 by secondary transfer roller 19 and intermediate transfer rollers 16, though then can avoid adhering to of toner, but, if image forms speed (Tape movement speed) and accelerates, then need high speed and carry out leaving and contact action of secondary transfer roller 19 continually, therefore, impact and belt tension that intermediate transfer belt 16 can produce the fierceness of following abnormal sound change, thereby, can between the roller of intermediate transfer belt 16 and support belt, produce small slip.
Because this slip can cause both just coming the image formation time at each image formation station is carried out revisal by detecting alignment mark (register mark), also can produce the problem of colo(u)r bias.In addition, also can send following problem: promptly, repeat the formation of alignment mark and patch (patch) image sometimes, till the position of each color image relation and toner image concentration of all kinds enter in the expected range, therefore, can make 19 pairs of middle transfer belt 16 of secondary transfer roller repeat to leave and contact action, thereby can cause the clutch driving mechanism of secondary transfer roller 19 to break down, reduce the reliability of image processing system.
Therefore, in order to solve such problem, present embodiment has following structure: promptly, before beginning to form a series of test patterns, secondary transfer roller 19 is moved away from middle transfer belt 16, and after a series of test patterns that repeat to form are by the position relative with secondary transfer roller 19, with between the roller of intermediate transfer belt 16 and tensioning rotating band, be unlikely to produce small slip, speed slowly, secondary transfer roller 19 is contacted with intermediate transfer belt 16.
Then, the photosensitive drums 20 that makes each image form station Y, M, C, K contacts with the direction of transfer belt surface 16a down of intermediate transfer belt 16, its result, each image forms station Y, M, the relative driven roller 14 of C, K also is configured on the direction of inclination to the left in the drawings.Shown in arrow among the figure, photosensitive drums 20 drives to the direction of transfer rotation of intermediate transfer belt 16.
Charging device 22 is made of the electrically conductive, electrically brush roll that is connected with high voltage generation source, and the photosensitive drums 20 of the relative photoreceptor of brush is with 2～3 times rotating speed retrograde rotation, and its periphery contacts with described photosensitive drums 20 simultaneously, thereby, make the surperficial uniform charging of photosensitive drums 20.The electrically conductive, electrically brush roll is to be the surface of the good conductive shaft parts (for example metal shaft) of 5～8mm at diameter, helically reel the woolens quality have 150,000～430,000 per square inch, slightly be that 2～6 deniers, precursor impedance are 10
7～10
9The semiconduction fiber of Ω and constituting wherein, remains in 0.3～0.5mm the contact degree of depth of photosensitive drums 20, thereby it can be rotated.
When adopting electronegative photoreceptor as photosensitive drums 20, the voltage that imposes on the brush roller preferably use DC component-300～-voltage of the AC compounent 800～1300V of the frequency that superposeed on the 500V about as 1KHz.In addition, as present embodiment, when being used for the image processing system of cleaner-less (cleanerless) structure, preferably adopt following structure: promptly, when not forming image, to be discharged on the photosensitive drums 20 attached to the residue of the transfer printing on brush roller toner, partly be transferred on the intermediate transfer belt 16 in primary transfer, and reclaim with the cleaning device 17 of intermediate transfer belt 16, wherein, described transfer printing residue toner is to be attached on the described brush roller when applying the opposite bias voltage of charging polarity with toner to the brush roller.
Because by adopting this charging device 22, can utilize minimum electric current to make the photosensitive drum surface charging, so, can be as the corona charging mode, device is inside and outside by a large amount of ozone pollutions.In addition, owing to be soft contact with contacting of photosensitive drums 20, therefore, difficult occurring in adopts the frequent transfer printing residue of roller charging modes toner to adhere to situation on charging roller and the photosensitive drums, thereby, can guarantee the stable picture quality and the reliability of device.
Below, forming station K with the image of Fig. 3 is that representative specifies developing apparatus 24.In the present embodiment, because each image forms station Y, M, C, K in the vergence direction setting, and the relation that contacts with the direction of transfer belt surface 26a down of intermediate transfer belt 26 of photosensitive drums 20, toner reservoir vessel 26 is tilted on the position that is configured in oblique below.Therefore, adopt special structure as developing apparatus 24.
That is, developing apparatus 24 is by the reservoir vessel 26 that stores toner (dash area of figure), be formed on the toner storage compartment 27 in this toner reservoir vessel 26, be configured in the toner mixing component 29 in the toner storage compartment 27, the partition component 30 of cutting apart toner storage compartment 27 tops, be configured in the toner supplying roller 31 of partition component 30 tops, be located on the partition component 30 and the blade 32 that contacts with toner supplying roller 31, be configured to the developer roll 33 that contacts with photosensitive drums 20 with toner supplying roller 31, and the restriction blade 34 that contacts with developer roll 33 constitutes.
In the present embodiment, adopt the contact portion of developer roll 33, toner supplying roller 31 and the developer roll 33 of photosensitive drums 20 opposite sides and restriction blade 34 not to be embedded in structure in the toner in the toner storage compartment 27.By this structure, can prevent the change of the contact pressure of 34 pairs of developer rolls 33 of restriction blade that the minimizing because of the toner that stores causes, fall the toner storage compartment 27 because of the residue toner that scrapes from developer roll 33 with restriction blade 34 simultaneously, so, can also prevent from developer roll 33, to form film.
In addition, the contact portion of developer roll 33 and restriction blade 34 is positioned at below the contact position of donor rollers 31 and developer roll 33, and be provided with and be fed on the developer roll 33 by donor rollers 31, but be not transferred on the developer roll 33 the residue toner and, be limited path in the toner storage compartment 27 that residue toner that blade 34 scrapes off is returned to the developing apparatus below from developer roll 33, and turn back to toner in the toner storage compartment 27, stirred by toner mixing component 29 with the toners in the toner storage compartment 27, and be fed to once more near the donor rollers 31 the toner introduction part by mixing component 29.Thereby, because the residue toner is not trapped in the contact portion of friction portion or the developer roll 33 and the restriction blade 34 of donor rollers 31 and developer roll 33, but fall the below, and the toner in toner storage compartment 27 is stirred, so, the toner that has slowed down in the developing apparatus worsens, and rapid variation takes place picture quality at once after can preventing to change developing apparatus.
In addition, the image formation station M with Fig. 3 is that example is elaborated.In developing apparatus 24, near developer roll 33, be formed with developer roll exposed portions serve 33a, on the other hand, in image writer 23,, be formed with opening portion 23a up over against photosensitive drums 20.At this moment, if make the opening portion 23a up of image writer 23 be positioned at the below of developer roll exposed portions serve 33a, it is unrestrained from developer roll exposed portions serve 33a because of gravity then to have toner, enter in the opening portion 23a up of image writer 23, thus the problem of pollution image writing station 23.
Therefore, in the present embodiment, up opening portion 23a is moved to intermediate transfer belt 16 1 lateral deviations, make the opening portion 23a up of image writer 23 and the developer roll exposed portions serve 33a of developing apparatus 24 not overlap.Like this, it is unrestrained from developer roll exposed portions serve 33a because of gravity just can to solve toner, enter in the opening portion 23a up of image writer 23, thus the problem of pollution image writing station 23.
Turn back to Fig. 1, feed unit 10 have stacked stored record medium P paper feeding cassette 35 and, the sheet feed section that constitutes by the paper pick-up roller 36 of supplying recording medium P from paper feeding cassette 35 one by one.
Open and close in the parts 3 first, have regulation recording medium P to the speed roller of the paper supply time of secondary transfer printing part to 37, as the secondary transfer printing component crimping to the secondary transfer printing parts 11 of driven roller 14 and intermediate calender rolls 16, fixation unit 12, recording medium delivery unit 13, exit roller to 39 and the transfer path 40 that is used for duplex printing.
Secondary transfer printing unit 11 has the dwang 42 that is supported on freely to rotate on the stationary shaft 41, is located at the secondary transfer roller 19 of dwang 42 1 ends, the other end that is configured in live-rollers 42 and first spring 43 that opens and closes between the parts 3 freely to rotate, wherein, generally speaking, secondary transfer roller 19 can move to the diagram direction of arrow by the elastic force of spring 43, and pushes intermediate transfer belt 16 and driven roller 14.Spring 43 1 sides at dwang 42 are provided with eccentric wheel 44, and dwang 42, spring 43 and eccentric wheel 44 constitute the arrangement of clutch of secondary transfer roller 19.And by the rotation of eccentric wheel 44, dwang 42 overcomes spring 43 and rotates, thereby secondary transfer roller 19 is broken away from from middle transfer belt 16.
Fig. 4 is illustrated in the photosensitive drums 20 that transfer belt illustrated in fig. 1 unit 9, intermediate transfer belt 16, cleaning device 17 and each image form station Y, M, C, K.About transfer belt unit 9, be provided with pair of frames 9a, driven roller 14 and driven voller 15 be installed, and tensioning between driven roller 14 and driven voller 15, supporting intermediate transfer belt 16 at framework 9a.Linking band driven wheel 51 at driven roller 14 1 ends, and, linking photosensitive drum driving gear 52 at each photosensitive drums 20 1 end, and servo gear 53 in 52 interlocks of each driven wheel.In addition, upstream side at direction of transfer belt surface 16a down is provided with CD-ROM drive motor 54, and the pinion wheel 54a on the turning axle that is fixed in CD-ROM drive motor 54 and, between the driven wheel 52 of the photosensitive drums 20 of upstream side, the reception and registration gear 55 that is made of 2 grades of gears in interlock.In addition, 56 are provided in a side of the toner returnable of framework 9a side, are used for reclaiming used toner from cleaning device 17.The shape of toner returnable 56 forms along the side of framework 9a, and is favourable to installing whole densification like this.
In said structure, rotatably support photosensitive drums of all kinds 20 by pair of frames (not having expression among the figure), and by begin to be arranged in reception and registration gear 54, photosensitive drum driving gear 52, the servo gear 53 of 1 row from 1 CD-ROM drive motor 54 that is configured in intermediate transfer belt 16 tops, drive each photosensitive drums 20 successively, drive the driven roller 14 of intermediate transfer belts 16 again by the photosensitive drum driving gear 52 of subordinate through band driven wheel 51.In addition, make servo gear 53 identical, adjust uneven swing circle, make a primary transfer interval partly all and image processing system of all kinds of driven roller 14 roughly the same with the number of teeth of band driven wheel 51.Like this, can adjust the rotatable phase of each photosensitive drums 20, gear in the fabrication phase, thereby, even change photosensitive drums 20, also can will be suppressed on the minimum degree because of the inhomogeneous caused colo(u)r bias of the rotation of photosensitive drums 20 of all kinds.
At this moment, transfer rate that can be by making intermediate transfer belt 16 is than the rotating speed slightly fast 1～3% of photosensitive drums 20, prevent the lax of intermediate transfer belt 16, realize that stable band drives, thereby the colo(u)r bias of preventing obtains high image quality, simultaneously, have velocity contrast by making, improve transfer efficiency, omit the cleaning device of photosensitive drums.
In the image processing system of present embodiment, as shown in Figure 1, tilted configuration intermediate transfer belt 16 and each image form station Y, M, C, K in housing 2, and circuit package box 5 is configured in the vertical lower that each image forms station Y, M, C, K.Then, will be connected on primary transfer parts 21, charging device 22, image writer 23, the test pattern sensor 18 through connector 57 from the wiring (in Fig. 1, representing) of circuit such as power circuit in the circuit package box 5 and control circuit with two dot-and-dash lines.In addition, the secondary transfer printing unit 11 in the first switching parts 3, fixation unit 12 etc. also can perhaps also can pass through near the wiring of rotation axis 3b of the first switching parts 3 through connector 57 wiring.
Described circuit is meant the low-tension supply that the view data from external piloting control system device is converted to the control circuit that can form the interface circuit of the data of record in the station at image, image processing system is controlled, supplies high-tension high-voltage power supply and make the actions such as CD-ROM drive motor, clutch coupling, control circuit of device to charging device, developing apparatus, transfer member.
By with these circuit arrangement image form the vertical lower at station and paper feeding cassette 35 above, make need not be again in order to carry circuit, and the width of multiplying arrangement integral body, the degree of depth, highly, thus small-sized image processing system can be provided.
In addition, carry out described configuration by interface circuit and control circuit, and the adjoining position of each link from the circuit substrate is connected to wiring on image writer 23 and the test pattern sensor 18 through connector 57, can shorten the wiring length that is connected to image writer 23, cut down the wiring cost, simultaneously, the noise in the time of for example can also reducing high frequency imaging signal with 100MHz and pass to image writer 23.In addition, by high-voltage power supply and low-tension supply are carried out described configuration, and the adjoining position of each link from the circuit substrate is connected to wiring on charging device and the transfer device through connector 57, can shorten wiring length, cut down wiring cost, simultaneously, the waveform that for example can also prevent the bias voltage that overlapping alternating voltage constitutes on DC voltage dies down and power loss.
In addition, owing to do not need near the rotation axis of baroque switching parts 3 to arrange described a plurality of wiring, therefore, in the time of can avoiding rotating the framework 9a that has carried transfer belt and photosensitive drums, because of the broken string that causes is clamped in wiring for attending device.
The action summary of above image processing system integral body is as follows.
(1) the print command signal of sending when (personal computers etc.) such as illustrated principal computers never (image formation signal) is when being imported in the control circuit in the circuit package box 5, and each image forms station Y, M, the photosensitive drums 20 of C, K, each roller and the intermediate transfer belt 16 of developing apparatus 24 is driven in rotation.
(2) photosensitive drums 20 surfaces are recharged device 22 uniform charging.
(3) form among station Y, M, C, the K at each image, image writer 23 corresponding image informations of all kinds are carried out the selectivity exposure to photosensitive drums 20 surfaces of uniform charging, thereby are formed for versicolor electrostatic latent image on photosensitive drums 20 surfaces.
(4) being formed on electrostatic latent image on each photosensitive drums 20 is developed device 24 and develops to toner image.
(5) the primary transfer parts 21 to intermediate transfer belt 16 apply the primary transfer voltage opposite with the charging polarity of toner, be formed on toner image on the photosensitive drums 20 in the primary transfer part, along with moving of intermediate transfer belt 16, overlapping successively being transferred on the intermediate transfer belt 16.
(6) with the moving synchronously of the intermediate transfer belt 16 of an image of primary transfer, be stored in the recording medium P in the paper feeding cassette 35, be supplied on the secondary transfer roller 19 37 through the speed roller.
(7) primary transfer image, combine with recording medium is synchronous at the secondary transfer printing position, and be pressed mechanism in the secondary transfer roller 19 that the driven roller 14 of intermediate transfer belt 16 is pushed, be subjected to the polarity bias voltage opposite with the primary transfer image, therefore, be formed on the primary transfer image on the intermediate transfer belt 16, by secondary transfer printing on the recording medium of synchronous supply.
(8) the remaining toner of transfer printing in secondary transfer printing transmits to driven voller 15 directions, and gets by scraping over against the cleaning device 17 of these roller 15 configurations, so intermediate transfer belt 16 is refreshed and can repeats described circulation once more.
(9) pass through in fixation unit 12 by recording medium, make toner image on the recording medium, afterwards, transmit recording medium to assigned position (when not carrying out printed on both sides to row's paper disc 4, when carrying out printed on both sides to the transfer path 40 that is used for printed on both sides).
Then, according to Fig. 5～Figure 10, the obstruction processing of declare record medium and the replacing of consumables.Fig. 5 only represents first open-close lid 3 ' that opens and closes parts 3 rotated downwards and exposes the state of the transfer path 40 that is used for printed on both sides, can remove the recording medium in the transfer path 40 that is blocked in duplex printing under this state.
Fig. 6 represents to open and close that parts 3 rotate with open-close lid 3 ' downwards and the state that exposes fixation unit 12 and secondary transfer printing unit 11 with first, under this state, can remove the recording medium that is blocked in fixation unit 12 and the secondary transfer printing unit 11, simultaneously, can also repair or change fixation unit 12 and secondary transfer printing unit 11 with comparalive ease.In addition, can open and close parts 4 with second and rotate upward and expose transfer belt unit 9, can remove the recording medium that is blocked in the transfer belt unit 9 this moment.
Fig. 7 represents to rotate the locking bar 9c on the framework 9a top that is positioned at transfer belt unit 9, removes the locking with lock shaft 2c, and with rotation axis 2b be fulcrum to right-hand rotating frame 9a, thereby expose the state of image formation unit 6.At this moment, the wiring that can remove by connector 57 connects.
In addition, as shown in Figure 8, can take off developing apparatus of all kinds 24, image carrier unit 25 and the transfer belt unit 9 that composing images forms unit 6, come place under repair or replacing from framework 9a.In this example, because therefore the easy relative position relation that guarantees between developing apparatus 24, photosensitive drums 20 and the intermediate transfer belt 16, can easily change operation.
The variation of Fig. 9 and Figure 10 presentation graphs 8.In this example, transfer belt unit 9 and image carrier unit 25 are supported on the framework 9a, and developing apparatus 24 is supported on housing 2 sides.Like this, can independently carry out selectivity to image carrier 25 and developing apparatus 24 changes.In addition, also image carrier unit 25 can be supported on housing 2 sides.
In the present embodiment, plug in the space of paper feeding cassette 35 when entirely being opened in interpolation recording medium as the first switching parts 3, fixation unit 12 and the secondary transfer printing unit 11 that install cover, therefore, can observe jam condition easily during recording medium generation paperboard, in addition, the operation the when upkeep operation of fixation unit 12 and paperboard also becomes and is easy to.In addition, a because replacing of carrying out photosensitive drums 20 and developing apparatus 24 in the upper space when one is opened these open at least transfer belt unit 9, image carrier unit 25 and the developing cell 24, therefore, also can carry out consumables with comparalive ease and change operation.
In addition, do not need to be provided for changing the bigger operation aperture of consumables at the framework of supporting image forming part as prior art, thereby improved the rigidity of framework, therefore, can access stable, preferable image.
In addition, can prevent when having opened framework 9a,, thereby adhere to fingerprint etc. and cause the situation of image shortcoming at belt surface because of the operator contacts transfer belt.In addition, because therefore the toner that falls can also receive change consumables with framework 9a the time, can prevent the pollution of recording medium conveyer 13, fixation unit 12 and secondary transfer printing unit 11.
In addition,, secondary transfer roller 19 is avoided from middle transfer roll 16, therefore, can easily be removed and be stuck in transfer belt 16 paper on every side when carrying out many transfer printings by the open first switching parts 3.
Figure 11 is other embodiment of image processing system of the present invention, is integrally-built schematic sectional view.In addition, in the following description, put on same label and omit explanation for the part identical with the example structure of Fig. 1.Present embodiment is the example that uses the paper travelling belt as transfer belt, replaces the intermediate transfer belt 16 of Fig. 1 and adopts paper travelling belt 59.
In the present embodiment, in the first switching parts 3, be provided with transfer belt unit 9 and fixation unit 12.Transfer belt unit 9 has: driven roller 14, be located at the top of housing 2, and drive by the drive source rotation that does not have expression among the figure; Driven voller 15 and backer roll 16 are configured in the oblique below of driven roller 14; Paper travelling belt 59, is supported on described 3 rollers at tensioning, and direction of arrow circulation drives in figure; Cleaning device 17 contacts with paper travelling belt 59 surfaces over against backer roll 60; Wherein, on the direction that driven roller 14 and paper travelling belt 59 are configured to tilt to the left in the drawings with respect to driven voller 59.Like this, when paper travelling belt 59 was driven, band tight side 59a was positioned at the below, and the belt sag side is positioned at the top.
In addition, the photosensitive drums 20 that forms station Y, M, C, K with each image over against, the transfer member 61 that is made of the laminated spring electrode contacts by the back side of its elastic force with paper travelling belt 59, and, apply transfer bias to transfer member 61.In addition, for the photosensitive drums 20 that makes each image form station Y, M, C, K contacts with the band tight side 59a of paper travelling belt 59, its result is on the direction that each image formation station Y, M, C, K also are configured to tilt to the left in the drawings with respect to driven voller 15.
Figure 12～Figure 15 is the synoptic diagram of other embodiment of image processing system of the present invention.In the embodiment of Figure 12,, form station Y, M, C, K at the vertical lower configuration image in the vertical direction configuration circuit enclosure 5 of intermediate transfer belt 16.In the embodiment of Figure 13, at the vertical direction configuration image formation station of paper travelling belt 59 Y, M, C, K, in the vertical lower configuration circuit enclosure 5 of paper travelling belt 59.In the embodiment of Figure 14, at the vertical direction configuration image formation station of paper travelling belt 59 Y, M, C, K and circuit package box 5.Compare with the embodiment of Fig. 1, in the embodiment of Figure 15, the toner reservoir vessel 26 that image forms station Y, M, C, K is set at the vertical direction of intermediate transfer belt 16.
More than, embodiments of the invention have been described, but the present invention is not limited to this, can change or the existing known or known technology of interpolation as required.
For example, in described embodiment, adopted the array write head, but also can adopt laser explosure device as image writer 23.At this moment, the side (in Fig. 1, to the deep direction of paper or the place ahead of paper) that circuit package box 5 is arranged on laser explosure device gets final product.
In addition, in the embodiment in figure 1, though driven roller 14 is configured in the below, and driven voller 15 is configured in the top, also driven voller 15 can be configured in the below, driven roller 14 is configured in the top.
In addition, in the above-described embodiments, first rotating fulcrum that opens and closes parts 3 and framework 9a is arranged on two sides of housing 2, makes and freely rotate at above-below direction, but also rotating fulcrum can be arranged on the side of housing 2, make and freely rotate in the horizontal direction.
In addition, in the present invention, intermediate transfer belt and paper travelling belt are referred to as transfer belt.
Claims (8)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP209615/2002 | 2002-07-18 | ||
| JP2002209615A JP2004053818A (en) | 2002-07-18 | 2002-07-18 | Image forming device |
| JP218117/2002 | 2002-07-26 | ||
| JP2002218117A JP2004061723A (en) | 2002-07-26 | 2002-07-26 | Image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1484107A CN1484107A (en) | 2004-03-24 |
| CN1278192C true CN1278192C (en) | 2006-10-04 |
Family
ID=29782059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03149596.6A Expired - Fee Related CN1278192C (en) | 2002-07-18 | 2003-07-17 | Image forming apparatus having transprinting belt |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6907209B2 (en) |
| EP (1) | EP1383012B1 (en) |
| CN (1) | CN1278192C (en) |
| AT (1) | ATE390648T1 (en) |
| DE (1) | DE60319917T2 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005070638A (en) * | 2003-08-27 | 2005-03-17 | Ricoh Co Ltd | Recording medium transport unit and image forming apparatus |
| US7031647B2 (en) * | 2004-04-14 | 2006-04-18 | Xerox Corporation | Imageable seamed belts with lignin sulfonic acid doped polyaniline |
| JP2006085085A (en) * | 2004-09-17 | 2006-03-30 | Fuji Xerox Co Ltd | Image forming apparatus |
| KR100618325B1 (en) * | 2004-10-11 | 2006-08-31 | 삼성전자주식회사 | Color Image Forming Device |
| JP4265534B2 (en) * | 2004-12-27 | 2009-05-20 | ブラザー工業株式会社 | Image forming apparatus |
| JP4134985B2 (en) | 2004-12-27 | 2008-08-20 | ブラザー工業株式会社 | Image forming apparatus and cartridge |
| JP4134984B2 (en) * | 2004-12-27 | 2008-08-20 | ブラザー工業株式会社 | Image forming apparatus |
| JP4860245B2 (en) * | 2005-01-31 | 2012-01-25 | 京セラミタ株式会社 | Image forming apparatus |
| JP4551791B2 (en) * | 2005-02-25 | 2010-09-29 | シャープ株式会社 | Developer recovery apparatus and image forming apparatus including the same |
| JP2007163742A (en) * | 2005-12-13 | 2007-06-28 | Fuji Xerox Co Ltd | Image forming apparatus |
| JP5023484B2 (en) * | 2005-12-13 | 2012-09-12 | 富士ゼロックス株式会社 | Image forming apparatus |
| JP5142689B2 (en) * | 2006-12-21 | 2013-02-13 | キヤノン株式会社 | Image forming apparatus |
| KR101090828B1 (en) * | 2009-10-26 | 2011-12-08 | 현대자동차주식회사 | Apparatus for fixing license plate to vehicle carrier |
| JP5782901B2 (en) * | 2011-07-28 | 2015-09-24 | ブラザー工業株式会社 | Image forming apparatus |
| EP2587314B1 (en) * | 2011-10-26 | 2020-09-23 | Hewlett-Packard Development Company, L.P. | Image forming apparatus |
| JP6048269B2 (en) * | 2013-03-27 | 2016-12-21 | 株式会社リコー | Image forming apparatus |
| JP7027741B2 (en) * | 2017-09-11 | 2022-03-02 | ブラザー工業株式会社 | Image forming device |
| JP7555177B2 (en) | 2018-09-28 | 2024-09-24 | ブラザー工業株式会社 | Transfer belt unit and image forming apparatus |
| EP4048369B1 (en) | 2019-10-22 | 2025-05-21 | Hologic, Inc. | Transvaginal treatment of stress urinary incontinence |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5065195A (en) * | 1989-07-05 | 1991-11-12 | Konica Corporation | Color image forming apparatus having a freely installable and detachable process cartridge |
| US5160946A (en) * | 1991-07-19 | 1992-11-03 | Xerox Corporation | Image registration system |
| JPH05323690A (en) * | 1992-05-18 | 1993-12-07 | Konica Corp | Color image forming device |
| US5887228A (en) * | 1995-10-16 | 1999-03-23 | Ricoh Company, Ltd. | Color image forming apparatus including process cartridge |
| JP3301306B2 (en) * | 1996-04-15 | 2002-07-15 | カシオ電子工業株式会社 | Toner recovery device and process unit having the same |
| JP3374057B2 (en) | 1997-09-24 | 2003-02-04 | シャープ株式会社 | Image forming device |
| JPH11133694A (en) * | 1997-10-30 | 1999-05-21 | Nec Niigata Ltd | Color image forming device |
| JP2001249522A (en) | 2000-03-06 | 2001-09-14 | Ricoh Co Ltd | Color image forming equipment |
| JP2002162887A (en) * | 2000-11-28 | 2002-06-07 | Fuji Xerox Co Ltd | Color image forming device |
| JP2003173051A (en) * | 2001-09-25 | 2003-06-20 | Ricoh Co Ltd | Image forming method, image forming apparatus, and image forming system |
-
2003
- 2003-07-14 US US10/617,875 patent/US6907209B2/en not_active Expired - Lifetime
- 2003-07-16 EP EP03015626A patent/EP1383012B1/en not_active Expired - Lifetime
- 2003-07-16 AT AT03015626T patent/ATE390648T1/en not_active IP Right Cessation
- 2003-07-16 DE DE60319917T patent/DE60319917T2/en not_active Expired - Lifetime
- 2003-07-17 CN CN03149596.6A patent/CN1278192C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE60319917D1 (en) | 2008-05-08 |
| US6907209B2 (en) | 2005-06-14 |
| EP1383012A3 (en) | 2006-03-29 |
| ATE390648T1 (en) | 2008-04-15 |
| DE60319917T2 (en) | 2009-04-16 |
| US20040109704A1 (en) | 2004-06-10 |
| EP1383012B1 (en) | 2008-03-26 |
| CN1484107A (en) | 2004-03-24 |
| EP1383012A2 (en) | 2004-01-21 |
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Granted publication date: 20061004 Termination date: 20190717 |